[mtlplshr]

first off,i cant believe i found a polishing forum,how cool.my problem:getting a perfect finish on aluminum.i polish big rigs and have no problems with the sanding and cutting part to get the metal shiny,the problem is when i go to the coloring to finish the job.i get a perfect reflection w/depth and clairity,but at different angles/lighting there are kind of a goldish clouds visable on the metal.i seem to have the most trouble with large,flat area's on sheet aluminum.what is it and what causes it?